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The Tc−nSrelation for weakly interacting charged Bose fluids

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
214
Identifiers
DOI: 10.1016/0921-4534(93)90821-7
Disciplines
  • Physics

Abstract

Abstract The T c- n S relation (Uemura plot) is calculated within statistical mechanics for the family of weakly repulsive Bose fluids parametrized by the sound velocity u or the interaction temperature T 1= mu 2/ k B. For u >0 the degeneracy between superfluid ( n S) and condensate ( n c) densities and between excitation ( n ex) and normal ( n n) densities is found to be lifted, n⩾ n S > n c, n ex⩾ n n= n- n S. Defining T c by n c( T c)=0 we obtain n S( T S) by inverting the relation T 1( T c). We find upward bent curves T c( n S) with slopes which, for electrons, compare reasonably well with the Uemura value.

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